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authorYishai Hadas <yishaih@mellanox.com>2015-01-25 16:59:37 +0200
committerDavid S. Miller <davem@davemloft.net>2015-01-25 14:43:14 -0800
commitad9a0bf08ffbf32b8f292c3bb78ca0f24bb8f6b2 (patch)
tree308abce801c5d44e999a6ba64d3afac2557fd688 /drivers/net/ethernet/mellanox/mlx4/catas.c
parentdd0eefe3abbf47442db296bf68f27eb2860c1cdf (diff)
net/mlx4_core: Refactor the catas flow to work per device
Using a WQ per device instead of a single global WQ, this allows independent reset handling per device even when SRIOV is used. This comes as a pre-patch for supporting chip reset for both native and SRIOV. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/catas.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/catas.c75
1 files changed, 34 insertions, 41 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/catas.c b/drivers/net/ethernet/mellanox/mlx4/catas.c
index 1a102c9bac99..5bb9aa6e281d 100644
--- a/drivers/net/ethernet/mellanox/mlx4/catas.c
+++ b/drivers/net/ethernet/mellanox/mlx4/catas.c
@@ -40,10 +40,7 @@ enum {
MLX4_CATAS_POLL_INTERVAL = 5 * HZ,
};
-static DEFINE_SPINLOCK(catas_lock);
-static LIST_HEAD(catas_list);
-static struct work_struct catas_work;
static int internal_err_reset = 1;
module_param(internal_err_reset, int, 0644);
@@ -77,13 +74,9 @@ static void poll_catas(unsigned long dev_ptr)
dump_err_buf(dev);
mlx4_dispatch_event(dev, MLX4_DEV_EVENT_CATASTROPHIC_ERROR, 0);
- if (internal_err_reset) {
- spin_lock(&catas_lock);
- list_add(&priv->catas_err.list, &catas_list);
- spin_unlock(&catas_lock);
-
- queue_work(mlx4_wq, &catas_work);
- }
+ if (internal_err_reset)
+ queue_work(dev->persist->catas_wq,
+ &dev->persist->catas_work);
}
} else
mod_timer(&priv->catas_err.timer,
@@ -92,34 +85,23 @@ static void poll_catas(unsigned long dev_ptr)
static void catas_reset(struct work_struct *work)
{
- struct mlx4_priv *priv, *tmppriv;
- struct mlx4_dev *dev;
- struct mlx4_dev_persistent *persist;
-
- LIST_HEAD(tlist);
+ struct mlx4_dev_persistent *persist =
+ container_of(work, struct mlx4_dev_persistent,
+ catas_work);
+ struct pci_dev *pdev = persist->pdev;
int ret;
- spin_lock_irq(&catas_lock);
- list_splice_init(&catas_list, &tlist);
- spin_unlock_irq(&catas_lock);
-
- list_for_each_entry_safe(priv, tmppriv, &tlist, catas_err.list) {
- struct pci_dev *pdev = priv->dev.persist->pdev;
-
- /* If the device is off-line, we cannot reset it */
- if (pci_channel_offline(pdev))
- continue;
+ /* If the device is off-line, we cannot reset it */
+ if (pci_channel_offline(pdev))
+ return;
- ret = mlx4_restart_one(priv->dev.persist->pdev);
- /* 'priv' now is not valid */
- if (ret)
- pr_err("mlx4 %s: Reset failed (%d)\n",
- pci_name(pdev), ret);
- else {
- persist = pci_get_drvdata(pdev);
- mlx4_dbg(persist->dev, "Reset succeeded\n");
- }
- }
+ ret = mlx4_restart_one(pdev);
+ /* 'priv' now is not valid */
+ if (ret)
+ pr_err("mlx4 %s: Reset failed (%d)\n",
+ pci_name(pdev), ret);
+ else
+ mlx4_dbg(persist->dev, "Reset succeeded\n");
}
void mlx4_start_catas_poll(struct mlx4_dev *dev)
@@ -158,15 +140,26 @@ void mlx4_stop_catas_poll(struct mlx4_dev *dev)
del_timer_sync(&priv->catas_err.timer);
- if (priv->catas_err.map)
+ if (priv->catas_err.map) {
iounmap(priv->catas_err.map);
+ priv->catas_err.map = NULL;
+ }
+}
- spin_lock_irq(&catas_lock);
- list_del(&priv->catas_err.list);
- spin_unlock_irq(&catas_lock);
+int mlx4_catas_init(struct mlx4_dev *dev)
+{
+ INIT_WORK(&dev->persist->catas_work, catas_reset);
+ dev->persist->catas_wq = create_singlethread_workqueue("mlx4_health");
+ if (!dev->persist->catas_wq)
+ return -ENOMEM;
+
+ return 0;
}
-void __init mlx4_catas_init(void)
+void mlx4_catas_end(struct mlx4_dev *dev)
{
- INIT_WORK(&catas_work, catas_reset);
+ if (dev->persist->catas_wq) {
+ destroy_workqueue(dev->persist->catas_wq);
+ dev->persist->catas_wq = NULL;
+ }
}